Aim-1: Examine individual differences in accuracy across blocks as measured through Conditioned Response Percentage (CR%)
Aim-2: Examine individual differences in precision across blocks as measured through changes in SD of Onset Latency
Participants: Sixty-seven typically developing 4- to 6- years old’s completed a trace EBC task.
Task: conditioned stimulus presentation (i.e., tone) followed by a 500-ms trace period of no stimulus presentation and a subsequent unconditioned stimulus (i.e., air puff to eye). Responses to stimuli (i.e., eye blinks) were measured. Stimuli presentation lasted approximately 15 minutes.
Analysis: Linear Mixed Effects models were implemented using lme4 package (Bates et al. 2023)
No age related differences in accuracy on Trace EBC task as measured through Conditioned Response (%) across blocks
| Sum Sq | Mean Sq | DF | F Value | Pr(>F) | |
|---|---|---|---|---|---|
| Block | 2932.7 | 325.85 | 9 | 1.6538 | 0.09747 |
| Child Age | 66.5 | 66.48 | 1 | 0.3374 | 0.56350 |
| Block X Child Age | 3279.8 | 364.42 | 9 | 1.8495 | 0.05735 |
No sex related differences in accuracy on Trace EBC task as measured through Conditioned Response (%) across blocks
| Sum Sq | Mean Sq | DF | F Value | Pr(>F) | |
|---|---|---|---|---|---|
| Block | 1354.60 | 150.511 | 9 | 0.7455 | 0.6671 |
| Child Sex | 12.23 | 12.235 | 1 | 0.0606 | 0.8064 |
| Block X Child Sex | 872.46 | 96.940 | 9 | 0.4802 | 0.8882 |
No age related differences in precision on Trace EBC task as measured through Onset Latency (SD) across blocks
| Sum Sq | Mean Sq | DF | F Value | Pr(>F) | |
|---|---|---|---|---|---|
| Block | 315785 | 35087 | 9 | 1.7857 | 0.06943 |
| Child Age | 2663 | 2663 | 1 | 0.1355 | 0.71425 |
| Block X Child Age | 298441 | 33160 | 9 | 1.6876 | 0.09025 |
No sex related differences in precision on Trace EBC task as measured through Onset Latency (SD) across blocks
| Sum Sq | Mean Sq | DF | F Value | Pr(>F) | |
|---|---|---|---|---|---|
| Block | 358550 | 39839 | 9 | 1.95750 | 0.04112* |
| Child Sex | 146 | 146 | 1 | 0.0072 | 0.93259 |
| Block X Child Sex | 107262 | 11918 | 9 | 0.5908 | 0.80470 |
This work is supported by the NIH under Grant [R01HD098152]. For more information on this study please visit http://plsd.fiu.edu or contact Hannah Bowley at hbowley@fiu.edu